updog: add page (#6322)

pages/common/updog.md

@@ -0,0 +1,25 @@
+# updog
+
+> A replacement for Python's SimpleHTTPServer.
+> It allows uploading and downloading via HTTP/S, can set ad hoc SSL certificates and use HTTP basic auth.
+> More information: <https://github.com/sc0tfree/updog>.
+
+- Start a HTTP server for the current directory:
+
+`updog`
+
+- Start a HTTP server for a specified directory:
+
+`updog --directory {{/path/to/directory}}`
+
+- Start a HTTP server on a specified port:
+
+`updog --port {{port}}`
+
+- Start a HTTP server with a password (To log in, leave the username blank and enter the password in the password field):
+
+`updog --password {{password}}`
+
+- Enable transport encryption via SSL :
+
+`updog --ssl`